mml=<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>The</mi><mi mathvariant="normal">&#xA0;</mi><mi>simplification</mi><mi mathvariant="normal">&#xA0;</mi><mi>of</mi><mi mathvariant="normal">&#xA0;</mi><msup><mfenced separators="|"><mrow><msqrt><mn>7</mn></msqrt><mi mathvariant="normal">&#xA0;</mi><mo>+</mo><mfrac><mn>1</mn><msqrt><mn>7</mn></msqrt></mfrac></mrow></mfenced><mn>2</mn></msup><mi>gives</mi></math>